This clinical trial was performed to evaluate the nano-filled resin modified glass ionomer (RMGI) -with a brand name of "Ketac Nano"- as a filling material for the treatment of caries in primary teeth. Children aged 5-8 years were selected and treated with either Ketac Nano or another conventional RMGI called Vitremer. Then, the treated children were evaluated at baseline, after one yeat and after two years. The hypothesis to be tested in the present study was: The clinical performance of nano-filled RMGI (Ketac Nano) in class I primary molars will differ from that of its preceding conventional RMGI (Vitremer).
First, shear bond strength of each material to primary molars dentin specimens were measured (n=10) using a notched-edge crosshead. Independent sample t-test was used for statistical analysis. Then, a split mouth designed clinical trial was performed in which nano-filled RMGI; Ketac Nano (KN) and conventional RMGI; Vitremer (VR) were used to restore class I cavities of primary molars. Each material group (n=30) was evaluated according to the modified United States Public Health Service (USPHS) regarding marginal discoloration, marginal adaptation, color match, anatomic form and recurrent caries, at baseline, after one year and after two years. Wilcoxon signed- rank test and Chi-square test were used for statistical analysis.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
29
Class I carious primary molars were selected. Dental caries was removed and cavities were prepared. The recent nano-filled RMGI filling (Ketac Nano) was used to fill these cavities.
Class I carious primary molars were selected. Dental caries was removed and cavities were prepared. The conventional RMGI filling (Vitremer) was used to fill these cavities.
Faculty of Dentistry, Tanta University
Tanta, Egypt
Evidence of clinically definite deterioration of the evaluated filling materials at specific characters (parameters); marginal discoloration, marginal adaptation, color match, anatomic form and recurrent caries.
The filling materials were blindly evaluated by two trained investigators at specific characters or parameters according to the modified United States Public Health Service (USPHS). Each parameter has three grades of evaluation; Alfa (A), Bravo (B) and Charlie (C) that represent the degree of deterioration of the filling materials.
Time frame: 2 years
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